public class Demo7 {

    private static int count;
    public static void main(String[] args) throws InterruptedException {
        Thread t1=new Thread(()->{
            for (int i = 0; i < 10000; i++) {
                count++;
            }
        });

        Thread t2= new Thread(()->{
            try {
                t1.join();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            for (int i = 0; i < 10000; i++) {
                count++;
            }
        });

        t1.start();
        t2.start();
        t1.join();
        t2.join();
        System.out.println(count);
    }
}
